From d540153b6766cc4079627ef9d70afff529b3301f Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Mon, 3 Sep 2012 13:42:31 +0200 Subject: [PATCH] re PR debug/53923 (ICE: RTL check: expected code 'reg', have 'debug_expr' in rhs_regno, at rtl.h:1091) PR debug/53923 * valtrack.c (dead_debug_insert_temp): Drop non-reg uses from the chain. From-SVN: r190883 --- gcc/ChangeLog | 6 ++++++ gcc/valtrack.c | 8 ++++++++ 2 files changed, 14 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ad59d6348f4..4fdfa966231 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-09-03 Jakub Jelinek + + PR debug/53923 + * valtrack.c (dead_debug_insert_temp): Drop non-reg uses + from the chain. + 2012-09-03 Joseph Myers * common.opt (--no-sysroot-suffix): New driver option. diff --git a/gcc/valtrack.c b/gcc/valtrack.c index b4eb5785ba3..2cdb06b174e 100644 --- a/gcc/valtrack.c +++ b/gcc/valtrack.c @@ -333,6 +333,14 @@ dead_debug_insert_temp (struct dead_debug *debug, unsigned int uregno, { if (DF_REF_REGNO (cur->use) == uregno) { + /* If this loc has been changed e.g. to debug_expr already + as part of a multi-register use, just drop it. */ + if (!REG_P (*DF_REF_REAL_LOC (cur->use))) + { + *tailp = cur->next; + XDELETE (cur); + continue; + } *usesp = cur; usesp = &cur->next; *tailp = cur->next;